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Set top address of flag area
• Set the top address of the flag area (24 bytes) in order to monitor the communication condition
and PC operation condition on the parameter address 007764 to 007767
• Flag area uses 24 bytes regardless number of connecting stations.
• In case of setting "ｺ0740, output flag" using JW-13PG.
Write "740(ｺ740)" in parameter addresses 007764 to 007765
After switching to byte display, write file
No. 0 with HEX (hexadecimal)
Write 80
to address
(H)
007767
(8)
Enter communication error detection interval
• If the JW-20CM does not receive data from a station within the specified time (initial value: 250
ms when fewer than 32 stations are connected, 450 ms when more than 33 stations are connected),
it turns OFF the communication monitor flag corresponding to this station. The specified time can
be changed by entering a different value at parameter address 007771
detection time). Use the same value for all the stations.
Normally, this value does not need to be changed. Use the modules with the initial value (00
S
t e
v
a
u l
e
(
D
)
0
0
0
n I
t i
a i
0
0
1
1
0
0
⋮
⋮
0
1
0
1
0
0
0
⋮
⋮
2
5
5
2
5
0
0
※ Detection time precision : —100 ms to
Ex.: If the PC scan time is extremely long (exceeds the time specified above), the communication
monitor flag will turn OFF, even though there is no communication error. In this case, change
the value at parameter address 007771
To the next page
File address: OCT (octal), word
File number/flag: HEX (hexadecimal), byte
Initial value
007764
Lower
(8)
007765
Upper
(8)
007766
(8)
File number
007767
D
(8)
7
Output flag : ON
Do not output flag : OFF
C
o
m
m
u
n
c i
v l
a
u l
: e
2
5
0
m
s
f
r o
e f
w
r e
+
0 ms
9
51
·
Contents
E0
(H)
01E0
→000740
(H)
01
(H)
File number 0
00
(H)
Output flag
80
(H)
.
(8)
Screen display of JW-13PG
07765
07766
I PARAM.
>07767
[DCM (decimal), byte]
t a
o i
n
e
r r
r o
d
e
e t
t c
o i
n
i t
m
e
h t
a
n
3
2
t s
t a
o i
n
, s
4
5
0
m
s
to a larger number.
(8)
.
(8)
Byte address
→ｺ0740
(8)
HEX
01
HEX
00
HEX
80
(communication error
(8)
).
(H)
※
(
m
) s
f
r o
m
o
e r
h t
a
n
3
3
t s
t a
o i
n
. s
9
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